A5101647984- Aquaculture Nutrition and Growth
- Marine Bivalve and Aquaculture Studies
- Marine and fisheries research
- Microbial Community Ecology and Physiology
- Isotope Analysis in Ecology
- Marine animal studies overview
- Crustacean biology and ecology
- Genomics and Phylogenetic Studies
- Fatty Acid Research and Health
- Polar Research and Ecology
- Metabolomics and Mass Spectrometry Studies
- Cephalopods and Marine Biology
- Algal biology and biofuel production
- Microbial Metabolic Engineering and Bioproduction
- Marine and coastal ecosystems
- Ocean Acidification Effects and Responses
- Marine and coastal plant biology
- Marine Biology and Ecology Research
- Meat and Animal Product Quality
- Coral and Marine Ecosystems Studies
- Enzyme Catalysis and Immobilization
- Arctic and Antarctic ice dynamics
- Physiological and biochemical adaptations
- Fish Ecology and Management Studies
- Water resources management and optimization
CSIRO Oceans and Atmosphere
2011-2024
University of Tasmania
2008-2024
Commonwealth Scientific and Industrial Research Organisation
1992-2023
James Cook University
2018
American Oil Chemists Society
2018
Antarctic Climate and Ecosystems Cooperative Research Centre
1993-2010
Chinese University of Hong Kong
2009
Health Sciences and Nutrition
2007
Futures Group (United States)
2005
Australian Antarctic Division
1994-2002
A polyphasic taxonomic study was performed to characterize dissimilatory iron-reducing strains mostly isolated from Antarctic sea ice. The were samples of congelated (land-fast) ice, grease and ice algal biomass collected the coastal areas Vestfold Hills in eastern Antarctica (68°S 78°E). facultatively anaerobic, motile, rod shaped, capable anaerobic growth either by fermentation carbohydrates or respiration, utilized a variety electron acceptors, including nitrate, ferric compounds,...
An analysis of the phospholipid ester-linked and lipopolysaccharide (LPS) fatty acids hydroxy six lactate-utilizing Desulfvibrio-type sulfate-reducing bacteria (SRB) has been performed using capillary gas-liquid chromatography-mass spectrometry (GLC-MS).The concentrations normal were essentially similar, with possible exception a high content in LPS Desulfvibrio gigas.Determination monounsaturated acid double bond configuration was by GLC-MS derivatized acids.A total nine branched chain...
Psychrophilic, yellow-pigmented, seawater-requiring bacteria isolated from the pycnocline of meromictic Burton Lake and sea ice cores obtained in Vestfold Hills (68°S, 78°E) eastern Antarctica were characterized. Phenotypic analysis showed that strains formed two distinct taxa. The first taxon included nonmotile, nutritionally fastidious Lake. cells these morphologically variant, ranging vibrioid to ring shaped coiled filamentous; addition, unable metabolize carbohydrates or polysaccharides...
A strictly aerobic, halotolerant, rod-shaped bacterium, designated strain TG408, was isolated from a laboratory culture of the marine diatom Skeletonema costatum (CCAP1077/1C) by enrichment with polycyclic aromatic hydrocarbons (PAHs) as sole carbon source. 16S rRNA gene sequence analysis placed this organism within order Xanthomonadales class Gammaproteobacteria. Its closest relatives included representatives Hydrocarboniphaga-Nevskia-Sinobacter clade (<92% similarity) in family...
Assessing the trophic role and interaction of an animal is key to understanding its general ecology dynamics. Conventional techniques used elucidate diet, such as stomach content analysis, are not suitable for large threatened marine species. Non-lethal sampling combined with biochemical methods provides a practical alternative investigating feeding these Stable isotope signature fatty acid analyses muscle tissue were first time examine assimilated diet reef manta ray Manta alfredi, compared...
The lipid classes and fatty acid profiles of macrophytic algae from the Phaeophyta ( Egregia menziesii ), Rhodophyta Chondracanthus canaliculatus ) Chlorophyta Ulva lobata were determined. contained highest amounts lipids (20–29 mg g −1 dry mass), followed by (9–16 mg) (2–3 mg), with increased in winter spring. This was reflected total content (14–24, 6–13 1–2 mass, respectively).Major polar (44–94 % lipids) sterols (3–8%). Higher levels triacylglycerols occurred during spring (22%) summer...
Understanding the trophodynamics of marine ecosystems requires data on temporal and spatial variation in predator diet but, particularly for wide-ranging species, these are often unavailable. The southern elephant seal (Mirounga leonina) consumes large quantities fish squid prey Southern Ocean relative to other mammals; however, how varies seasonal foraging behaviour is unknown. We used fatty acid (FA) signature analysis 63 blubber cores from adult female M. leonina over three seasons...
Docosahexaenoic acid (DHA) and eicosapentaenoic (EPA) are nutritionally important long-chain (≥ C20) omega-3 polyunsaturated fatty acids (ω3 LC-PUFA) currently obtained mainly from marine sources. A set of genes encoding the chain elongation desaturation enzymes required for synthesis LC-PUFA their C18 PUFA precursors was expressed seed-specifically in Arabidopsis thaliana. This resulted DHA, most ω3 LC-PUFA, first time seed oils, along with its precursor EPA ω6 arachidonic (ARA). The...
Thirty eight strains of Antarctic bacteria were screened for the ability to produce polyunsaturated fatty acids (PUFA). Five contained eicosapentaenoic acid (20:5ω3) in range trace 3.3% total acids, and up 1.4 mg g -1 dry weight. Thirteen produced polyunsaturates including 18:2ω6, 18:3ω3, 18:4ω3 20:4ω6 7.0% acids. Although data set is currently small, proportion found PUFA's higher than that temperate marine (and similar recorded barophilic bacteria). This suggests environment has naturally...
The lipid class, fatty acid, and sterol composition of eight species ichthyotoxic marine gymnodinioid dinoflagellate ( Karenia, Karlodinium , Takayama ) was examined. major class in all phospholipid (78%–95%), with low levels triacylglycerol (TAG; 0%–16%) free acid (FFA; 1%–11%). common polyunsaturated acids (PUFA), octadecapentaenoic (OPA 18:5ω3), docosahexaenoic (DHA 22:6ω3), were present varying amounts (14%–35% 8%–23%, respectively). very‐long‐chain PUFA (VLC‐PUFA) 28:7ω6 28:8ω3 at...
We developed new perspectives to identify important questions and propose approaches for future research on marine food web lipids. They were related (i) structure function of lipids, (ii) lipid changes during critical life phases, (iii) trophic marker (iv) potential impact climate change. The first addresses the role lipids in membranes, storage buoyancy with following key question: How are properties membranes deposits affected by various types lipids? second deals importance reproduction,...
Abstract Determining the lipid content and fatty acid (FA) composition of aquatic organisms has been major interest in trophic ecology, aquaculture, nutrition for over half a century. Although protocols analysis are well-described, their application to sciences often requires modifications adapt field conditions sample type. Here, we present current state knowledge methods dedicated both marine freshwater analyses, from sampling data treatment. We review: (i) preservation, storage transport...
Research Article| April 01, 1999 Sedimentation of 13C-rich organic matter from Antarctic sea-ice algae: A potential indicator past extent John E. Gibson; Gibson 1Antarctic Cooperative Centre, University Tasmania, Hobart, Tasmania 7001, Australia Search for other works by this author on: GSW Google Scholar Tom Trull; Trull Peter D. Nichols; Nichols 2Commonwealth Scientific and Industrial Organisation, Division Marine Research, Roger Summons; Summons 3Australian Geological Survey Canberra...
A marine bacterium, designated strain MCTG13d, was isolated from a laboratory culture of the dinoflagellate Lingulodinium polyedrum CCAP1121/2 by enrichment with polycyclic aromatic hydrocarbons (PAHs) as sole carbon source. Based on 16S rRNA gene sequence comparisons, most closely related to Porticoccus litoralis IMCC2115(T) (96.5%) and members genera Microbulbifer (91.4 93.7%) Marinimicrobium (90.4 92.0%). Phylogenetic trees showed that clustered in distinct phyletic line class...
Atlantic salmon production in Tasmania (Southern Australia) occurs near the upper limits of species thermal tolerance. Summer water temperatures can average over 19 °C several weeks and have negative effects on performance health. Liver tissue exerts important metabolic functions adaptation. With aim identifying mechanisms underlying liver plasticity response to chronic elevated temperature salmon, label-free shotgun proteomics was used explore quantitative protein changes after 43 days...